Arrangement in relay-combination groups



Allg- 1933- G. A. BETULANDER 1,924,064

ARRANGEMENT IN RELAY COMBINATION GROUPS Filed Dec. 22. 1928 PatentedAug. 22, 1933 UNITEDISTATES PATENT OFFICE ARRANGEMENT INRELAY-COLIBINATION GROUPS Gotthilf Ansgarius Betulander, SodertornsVillastad, Sweden 1 Claim.

This invention relates to an arrangement in so called relay-combinationgroups for telephone systems and is provided with indicating andconnecting members of any kind and has 5 for object to increase thecapacity of the combination group without the indicating or connectingmember of the combination group itself or both being increased.

The figure shows schematically an arrangement of contact groups inaccordance with this invention. I

In the arrangement here shown there is provided a pair of bars B1 andB2. Extending across these bars are bars E1, E2, E3 and E4. At

the intersection of each pair of intersecting bars, and here shown asabove that intersection, are pairs of contact groups A, the two groupsof each pair being on opposite sides of the respective bar. Carried byeach of the bars B1 and B2 are pairs of indicating or actuating arms Dfor each pair of contact groups A andthese arms are selectively operableby means of pairs of magnets 0 arranged at the opposite sides 5 of thebars B. Similarly each bar El, E2, E3

and E4 carries pairs of contact operating arms G controlled by magnetsF. The groups A thus form contacts for the transfer switches indicatedby lines and by selectively energizing the magnets C and F any desiredcontact 60 group may be opened or closed. Obviously the arrangement isnot limited to the number of bars 13 and bars E shown.

Having now described my invention, what I claim as new and desire tosecure by Letters 5 Patent-is:

In selecting means for telephone systems, indicating and connectingmembers, and a plurality of contact groups each composed of duplicatecontacts sets, each contact of a set in a group being connected with thecorresponding contact of the appertaining set of the total contactgroups to form a common contact system, transfer switches adapted to cutin said duplicate contact sets alternatively into circuits, and a singlemovable member replacing two adjacent indicating members.

GOTTHILF ANSGARIUS BETULANDER.

